Star

Stars (★☆) are used in the game as a form of rating.
 * Ability card rarity -- e.g. "Gigantuar★4", "Salamander★3+". Fast-learner cards have a plus after the rarity number.
 * Skill coin rarity -- e.g. "Skill Coin ★3".
 * Weapon rarity -- Weapons display gold stars at the top left of the icon, and their name also indicates the rarity.
 * Crit Chance attribute -- Each ★ represents 5% crit chance, and each ☆ represents 50% crit chance.
 * Speed attribute -- Each ★ represents 1 action per turn.
 * Defense attribute -- Each ★ represents 5% damage reduction, and each ☆ represents 50% damage reduction.
 * Multiplayer quest difficulty -- e.g. Quest★, Quest★★★.